Introduction: A critical appraisal of major water engineering projects and the need for interdisciplinary approaches

Abstract

Water touches every aspect of human existence on planet earth. While this notion may be regarded as a triviality, it nevertheless has highly complex consequences. Water as a georesource is subject to many pressures due to its multiple functions that go far beyond its role as the fundamental basis of organic life. For instance, antagonistic social, economic and ecological demands meet to form the “water-energy-food” nexus. Rising population numbers, changing lifestyles and climate change have substantial impacts on water resources and aquatic ecosystems. Furthermore, water is a factor in peace among nations: water can be both a source of controversy and of cooperation. The “hidden core” of many international conflicts can be regarded as disputes over the access to water.